Ss Brewtech’s Biggest Baddest Holiday Giveaway Ever!

Home Brew Forums > Home Brewing Beer > Beginners Beer Brewing Forum > Noob Check Valve Question
Thread Tools
Old 02-10-2009, 04:36 PM   #1
Feedback Score: 0 reviews
Join Date: Jan 2009
Location: Central PA
Posts: 120
Default Noob Check Valve Question

This question is really just to satisfy my curiosity. I am currently using a 3 piece airlock, but what about a one way check valve?

I have heard that sometimes primaries can suck the sanitized water/vodka through the airlock back into the fermenter. Why not use a one way check valve so nothing can get in, but the gas can escape? With check valves there is a certain amount of pressure that needs to be built up before they release any gas; the same principle goes with an airlock.

I assume the pressure needed for a check valve is greater than a traditional airlock and that this is why airlocks are preferred? But we all know what ASSuming can do.

Just curious!

lots of stuff brewing, fermenting, curing, rising, baking. Life is good.
telemaster is offline
Reply With Quote
Old 02-10-2009, 05:37 PM   #2
Feedback Score: 0 reviews
Opherman47's Avatar
Join Date: Jan 2008
Location: Nashville, TN
Posts: 233
Liked 1 Times on 1 Posts
Likes Given: 1


chris white of whitelabs on a podcast for the brewing network, advised that as little pressure as possible be put on fermenting beer, so like for the first 3 days or so he recommended a cheese cloth even be put over the mouth of the carboy, that fermentation will be so strong that the C02 will keep any nasties from getting in there, then after a few days go airlock, the pressure affects the yeast reproduction
Opherman47 is offline
Reply With Quote
Old 02-10-2009, 06:50 PM   #3
Feedback Score: 0 reviews
Join Date: Nov 2008
Location: Western Ia.
Posts: 248
Liked 2 Times on 2 Posts


You would have to have a check valve that opened under extremely low pressure. Maybe an extremely light swing check. anything with a spring in it would be too much.
Bottled: Kolsch, belgian Wit, Belgian dubbel, Edworts Haus Pale Ale
Seconday: We don't need no stinking Secondary
Primary: IPA
IowaHarry is offline
Reply With Quote

Thread Tools

Similar Threads
Thread Thread Starter Forum Replies Last Post
Trying to locate a 1/4" NPT check valve Pickngrin Bottling/Kegging 3 10-26-2009 02:09 PM
Check Valve Question avaserfi Bottling/Kegging 1 02-25-2009 06:27 AM
Ball Check Valve (kegging noob, please be gentle) ShortSnoutBrewing Bottling/Kegging 18 11-09-2007 05:04 PM
Check Valve installation PitsPale Bottling/Kegging 3 05-16-2007 03:25 PM
Co2 check valve..... Jester Bottling/Kegging 5 03-28-2006 04:03 PM

Forum Jump

Newest Threads